45. Serialized Data Buffer

#include <stdio.h>
#include <stdint.h>

void build_packet(uint8_t command, uint16_t value, uint8_t status, uint32_t checksum) {
    uint8_t buffer[10];
    buffer[0] = 0xA5;
    void *ptr = &command;
    buffer[1]= *((uint8_t*) ptr);
    ptr = &value;
    buffer[2]= *((uint8_t*) ptr);
    buffer[3]= *((uint8_t*) ptr+1);
    buffer[4]= status;
    ptr = &checksum;
    buffer[5]= *((uint8_t*) ptr);
    buffer[6]= *((uint8_t*) ptr+1);
    buffer[7]= *((uint8_t*) ptr+2);
    buffer[8]= *((uint8_t*) ptr+3);
    buffer[9]= 0x5A;


    // Your logic to fill buffer

    // Then print buffer
    for(int i = 0; i<10;i++){
        printf("%d ",buffer[i]);
    }
}

int main() {
    uint8_t cmd, status;
    uint16_t val;
    uint32_t crc;

    scanf("%hhu %hu %hhu %u", &cmd, &val, &status, &crc);
    build_packet(cmd, val, status, crc);
    return 0;
}